Will my 60-day COVID extension start from the application date if I go to immigration on November 15th?

The individual inquired about the timing of their COVID extension application in relation to their STV visa expiration. They received guidance on the process, indicating that the 60-day extension would likely start from the date of the application rather than extending the existing visa term. Comments suggested an optimal application timeframe just before the expiration date and noted current immigration office closures.